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Blue colour of the sky is due to scattering of light. The two most common types of matter present in the atmosphere are gaseous nitrogen and oxygen. These particles are most effective in scattering the higher frequency and shorter wavelength portions of the visible light spectrum.
There are three numbers 'u', 'v' and 'w' (u < v < w) such that 'v' is equal to the average of 'u' and 'w'. 80% of 'w' is equal to 'u' and the difference...
Simplify
A bag contains coins of ₹1, ₹2, and ₹5 denominations in the ratio 5:2:3, respectively. If the total value of the coins is ₹1,224, how many ₹5 ...
Determine how many distinct divisors the number 520 has.
Find the number of prime factors of 300?
A number leaves a remainder of 12 when divided by 19. What will be the remainder when three times that number is divided by 19?
If ‘+’ means ‘-‘, ‘×’ means ‘÷’ ‘÷’ means ‘+’ and ‘-‘ means ‘×’, then which of the following will be the value of th...
In a class, 2/5 of the students are girls and rest are boys. If 4/9 of the girls and 1/3 of the boys are absent, what part of the total number of studen...